// Copyright 2019 Google, Inc.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: prod-OptionalExpression
description: >
  various optional chain expansions
info: |
  OptionalChain[Yield, Await]:
    ?.[Expression]
    ?.IdentifierName
    ?.Arguments
    ?.TemplateLiteral
    OptionalChain [Expression]
    OptionalChain .IdentifierName
    OptionalChain Arguments[?Yield, ?Await]
    OptionalChain TemplateLiteral
features: [optional-chaining]
---*/

function Test() {
    const arr = [10, 11];
    const obj = {
      a: 'hello',
      b: {val: 13},
      c(arg1) {
        return arg1 * 2;
      },
      arr: [11, 12]
    };
    const i = 0;

// OptionalChain: ?.[Expression]
    assert.sameValue(11, arr?.[i + 1]);

// OptionalChain: ?.IdentifierName
    assert.sameValue('hello', obj?.a);

// OptionalChain: ?.Arguments
    const fn = (arg1, arg2) => {
      return arg1 + arg2;
    }
    assert.sameValue(30, fn?.(10, 20));

// OptionalChain: OptionalChain [Expression]
    assert.sameValue(12, obj?.arr[i + 1]);

// OptionalChain: OptionalChain .IdentifierName
    assert.sameValue(13, obj?.b.val);

// OptionalChain: OptionalChain Arguments
    assert.sameValue(20, obj?.c(10));
}

// preheat
const NUMBER_OF_PREHEAT = 1;
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}

ArkTools.jitCompileAsync(Test);
assert.sameValue(ArkTools.waitJitCompileFinish(Test), true, '[JIT] JIT disabled.');

// test
const NUMBER_OF_TEST = 1; // or 2
for (let i = 0; i < NUMBER_OF_PREHEAT; i++) {
    Test();
}
